Gregory Simpson, M.D.
NPI 1740488238 · Dermatology Physician · Fresno, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Simpson, M.D. is a Dermatology Physician provider in Fresno, CA (NPI 1740488238).
Provider details
- NPI number
- 1740488238
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A112941 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,280 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 755 | $7 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 612 | $92 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 419 | $65 |
| Biopsy of Related Skin Growth, First Growth11102 | 140 | $105 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 97 | $112 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 182 | 111 |
| Dupilumabbrand: Dupixent Pen | 136 | 17 |
| Ketoconazole | 107 | 61 |
| Warfarin Sodium | 68 | 14 |
| Adalimumabbrand: Humira(cf) Pen | 65 | — |
| Minoxidil | 59 | 23 |
| Clobetasol Propionate | 57 | 37 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$105 across 5 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-07-05
- Last updated
- 2025-08-11
- Certified
- 2025-08-11
Frequently asked questions
- What is Gregory Simpson's NPI number?
- Gregory Simpson's National Provider Identifier (NPI) is 1740488238, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Simpson's specialty?
- Gregory Simpson is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Simpson located?
- Gregory Simpson's practice location on file with NPPES is 2335 E Kashian Ln Ste 208, Fresno, CA 93701-2230.
- What is Gregory Simpson's phone number?
- The practice phone number listed in the NPPES registry for Gregory Simpson is (559) 320-1090.
- Does Gregory Simpson accept Medicare?
- Gregory Simpson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Simpson's NPI active?
- Yes — Gregory Simpson's NPI (1740488238) is active in the NPPES registry as of the last update on 2025-08-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.